First, the northern lights. Now, a rare comet. October has been a great month for stargazers in the Bay Area. The latest unique viewing opportunity happened Sunday evening when comet Tsuchinshan-Atlas, bright enough to spot with the naked eye, made a pass over the region. The comet’s orbit only takes it near Earth every 80,000 years. Comet Tsuchinshan-Atlas as seen from the Bay Area. Comet Tsuchinshan-Atlas as seen from the Bay Area. Comet Tsuchinshan-Atlas as seen from the Bay Area. Comet Tsuchinshan-Atlas as seen from the Bay Area. Don’t worry if you didn’t see it Sunday night. The comet should be visible through the end of the month, as long as the sky is clear. Those hoping to spot Tsuchinshan-Atlas should go outside about an hour after sunset and look to the west. Astronomy Oct 9 A rare comet will brighten the night skies in October Astronomy Oct 11 See it: Northern lights put on a show in the Bay Area This story uses functionality that may not work in our app. Click here to open the story in your web browser.